SPX Cooling Technologies 1000 - Manual (Page 17)

Specifications Specification Value
Marley / Sigma 1000/1200 Cooling Tower / Specifications: Base
17
4.0 Fan Deck and Fan Cylinder:
4.1 The fan deck shall act as a working
platform for maintenance personnel.
It shall be fabricated of no less than
1" thick, 7 ply, exterior grade, treated
Douglas Fir plywood, and shall be
designed for a uniform live load of
60 psf or a concentrated load of 600
pounds.
4.2 Fan cylinders shall be molded FRP.
They shall be anchored to the fan deck
structure to provide a consistently
stable operating shroud for the fan.
Fan cylinders less than 72" in height
shall be equipped with a heavy gauge,
removable, hot-dip galvanized steel fan
guard for the protection of operating
personnel.
■ The indicated design values for framing and decking not only give
you assurance that the tower can withstand long term operation
in a hostile environment—but that it will accept many years of
inspection and maintenance traffic by your operating personnel.
Fiberglass-reinforced polyester fan cylinders provide the close tip
clearances and smooth airflow contour necessary for good fan
performance. The inert, noncorroding nature of FRP assures that
these characteristics will persist.
Even in aggressive water conditions, the heavy construction of
the fan guard normally precludes the need for stainless steel.
Diagonal Connector Diagonal and Column Anchorage